Boot and shoe jack.



J. D. PREWETT.

BOOT AND SHOE JACK.

APPLICATION FILED MAR. 20, 1912.

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JOHN D. PREWETT, OF JOPLIN, MISSOURI.

BOOT AND SHOE JACK.

Specification of Letters Patent.

Application filed March 20, 1912.

Patented June 17,1913.

Serial No. 685,006.

To all whom it may con 0.67%.

Be it known that I, JOHN D. PREWETT, a citizen of the United States, residing at Joplin, in the county of Jasper and State of Missouri, have invented certain new and useful Improvements in Boot and Shoe Jacks, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to new and useful improvements in the class of devices known as boot and shoe jacks and my object is to provide a device of this character which may be readily disposed in various positions for operation thereon.

A further object of the invention is to provide a device of this character with an improved joint thereon between the shank upon which the last is mounted and the supporting device therefor.

A still further object of the invention is to provide a device which is extremely simple and durable in construction, inexpensive to manufacture and one which is very efficient and useful in operation.

With these and other objects in view, the invention consists in the novel features of construction, combination and arrangement of parts as will be hereinafter referred t0 and more particularly pointed out in the specification and claims.

In the accompanying drawings Figure 1 is a side elevation of the device. Fig. 2 is a front elevation of the same. Fig. 3 is a vertical transverse section through the de vice as seen on line 33, Fig. 1. Fig. 4 is a side elevation of the device with one of the side plates thereof removed.

In describing my invention, I shall refer to the drawings in which similar reference characters designate corresponding parts throughout the several views and in which 1 indicates a support in the form of a pedestal, the base portion of which 1s adapted to be secured by means of screws or the like to a floor or other stationary ob ect, while the upper portion of said support has a block 2 formed thereon which block is preferably rectangular in plan. Formed integral with or secured to one side face of said block 2 is a wall 3, the upper portion of which has the bearings 4 formed therein and adapted to rest on the upper face of the block 2 is a cylindrical head 5 formed on the lower end of a shank or pin 6. Loosely mounted on the lower end of the shank 6 and adapted to rest on the upper face of the head 5 is a block 7 formed with an opening through which the shank passes and in which the shank is mounted to turn, the said block being formed with a curved or convex upper surface as best illustrated in Fig. 4.

In order to secure the lower end of the shank 6 to the sup-port so as to permit said shank to be moved in various positions with respect thereto, I provide a pair of irregularly shaped side plates 8 and 9 which are pivoted on one side thereof to a bolt 10 extending through the bearings 4 in the wall 3. The upper portions of said plates are curved, as shown, the same being provided with the inwardly facing arcuate flanges 11 which flanges are adapted to contact with the convex portion of the block 7 and extending through the plates is an additional bolt 12. This latter bolt 12 also extends through the bearings formed in the upper portion of a link 13 in the form of a plate. These bolts 10 and 12 have the nuts 14 engaged with the free ends thereof so as to secure the side plates 8 and 9 together against the block 2, which together with the wall 3 form a substantial socket for the head and block at the lower end of the shank 6 and engaged with the lower or free end of the loosely extending plate 13 is a hook 15 which is secured to one end of a coil spring 16. This coil spring 16 extends vertically of the support 1 and its lower end is provided with an additional hook 17 which is in turn engaged with an eye or the like 18 secured to the base portion of the support 1.

As stated, a substantial socket is formed at the upper portion of the support 1 by the block 2 having the rear wall 3 thereon, the side plates 8 and 9 and the front plate 13, it being understood thatthe flanges at the upper edges of the side plates 8 and 9 are held in contact with the convex upper face of the block 7 by the tension of the spring 16. It will thus be understood that the shank 6 with the head 5 at its lower end may be readily rotated about a vertical axis on the supporting block 2 without affecting the block 7 and the remaining parts of the device. This is possible in view of the fact that said block '7 is loosely disposed on the shank 6 to rest on the head 5. The shank 6 is further capable of a forward and rearward movement, this movement of the shank carrying the block 7 therewith and it will be understood that in such a movement, the convex upper surface of the block 7 contacting with the flanges 11, will force the side plates 8 and 9 and the plate 13 upwardly under tension of the spring 16.

The shank 6 which is circular in cross section for the greater portion of its length has the extreme upper end thereof reduced to form flat faces whereby a pair of clamping members 19 may be secured thereto by means of the bolts 20. The inner opposed faces of said clamping members at the upper ends thereof are oflset to provide a substantial groove therein when brought together and a shoe or boot last 21 has a tongue or rib 22 formed on the bottom thereof adapted to be received in the groove of said clamping members. It will therefore be seen that this last may be readily applied to or removed from the device by the operation of the clamping members.

As shown in the drawings, a collar 23 encircles the'shank 6 and rests loosely upon the upper edges of the side plates 8 and 9, but in actual operation, this collar is adapted to be securely held on the shank above said side plates by means of a set screw 24. This collar is also provided at diametrically opposite points with slots 25 adapted to be engaged by the ends of straps (not shown), said straps being in turn adapted to be passed over the boot or shoe mounted on the last so that the same may be securely held to the last while operating thereon.

From the foregoing description of the construction of my device the operation thereof will be quite readily understood and it will be seen that I have provided a simple and efficient device for carrying out the objects of the invention and while I have particularly described the elements bestv adapted to perform the functions set forth it will be obvious that various changes in form, proportion and in the minor details of construction may be resorted to without departing from thesplrit or sacrificing any 1 of the principles of the invention.

Having thus described this invention, what I claim is port, a shank resting thereon, a block through which the shank passes and in i which it is mounted to turn about its "longii tudinal axis, the block being formed with a convex upper surface, and yieldingly held plates embracing said block and formed 1 with inwardly projecting flanges engaging the convex surface of said block.

2. A boot and shoe jack, comprising a support, a shank resting thereon, a block through which the shank passes and in which it is mounted to turn about its longitudinal axis, plates pivotally connected at one end to the support and embracing said block, and formed with inwardly projecting flanges engaging the upper surface of the block, and means for yieldingly holding said plates with the flanges pressing down upon the block.

3. A device of the class described comprising a support, having a block formed at the upper end thereof, a wall formed on one side face of said block, a shank having a head formed at the lower end thereof and rest-ing on said block, an arcuate block loosely mounted on said shank, plates pivotally carried on said wall, the upper edges of said plates being provided with arcuate flanges, and means yieldingly cooperating with said plates to normally retain said flanges in engagement with the arcuate block on said shank.

4. A device of the class described comprising a support having a block formed at the upper end thereof, a wall formed on one side face of said block, a shank having a head formed at the lower end thereof, and resting on said block. an arcuate block loosely mounted on said shank, a pair of plates pivotally carried on said wall, said plates being each provided with an inwardly extending arcuate flange adapted for en gagement with the upper surface of said arcuate block, an additional plate pivotally carried between said side plates on the side of said first mentioned block opposite that having the wall formed thereon, and spring means engaged with said latter plate and the support.

5. A device of the class described comprising a support having a flat block formed at the upper end thereof, a wall formed on one side face of said block, a shank provided with a cylindrical head at the lower end thereof adapted to rest on said block, a block loosely carried on said shank and having a convex upper surface, a pair of side plates pivotally carried on said wall and contacting with the side faces of said blocks, said plates being provided with inwardly extending arcuate flanges adapted to contact with the curved upper face of the second named block, an additional plate pivotally carried between said side plates on the side of said 1. A boot and shoe ack comprlslng a supwhich it is mounted to turn about its lon- 30 gitudinal axis, said block resting on the whereby said flanges will press downwardly head of the shank and formed with av conupon the convex surface of the block. 10 vex upper surface, plates pivotally connect- In testimony whereof I hereunto affix my ed at one end to the support and embracing signature in the presence of two witnesses. said head and block, said plates having in- JOHN D. PREWETT. wardly projecting curved flanges engaging Witnesses:

the upper convex surface of the block, and MILDRED ARNE,

means for drawing the plates downwardly, OLLIE M. TAPPANA,

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

